[Xen-devel] [PATCH] e820: fix e820_change_range_type()

[Xiao Guangrong <ericxiao.gr@xxxxxxxxx>]

In below case, e820_change_range_type() will return succee:
[s, e] is in the middle of [rs, re] and e820->nr_map+1 >= ARRAY_SIZE(e820->map)
actually, it's failed, so this patch fix it

Signed-off-by: Xiao Guangrong <ericxiao.gr@xxxxxxxxx>

diff -r f23b859e237a -r 93bc06dd1161 xen/arch/x86/e820.c
--- a/xen/arch/x86/e820.c       Tue Nov 10 02:34:16 2009 +0800
+++ b/xen/arch/x86/e820.c       Tue Nov 10 02:41:59 2009 +0800
@@ -574,7 +574,7 @@
             e820->map[i+1].type = new_type;
         }
     }
-    else if ( e820->nr_map+1 < ARRAY_SIZE(e820->map) )
+    else
     {
         if ( (e820->nr_map + 2) > ARRAY_SIZE(e820->map) )
             goto overflow;

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